WO2011025625A1 - Universal load switch - Google Patents
Universal load switch Download PDFInfo
- Publication number
- WO2011025625A1 WO2011025625A1 PCT/US2010/044044 US2010044044W WO2011025625A1 WO 2011025625 A1 WO2011025625 A1 WO 2011025625A1 US 2010044044 W US2010044044 W US 2010044044W WO 2011025625 A1 WO2011025625 A1 WO 2011025625A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- contacts
- blade
- contact
- load switch
- assembly
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/12—Movable parts; Contacts mounted thereon
- H01H13/14—Operating parts, e.g. push-button
- H01H13/18—Operating parts, e.g. push-button adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/30—Energy stored by deformation of elastic members by buckling of disc springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H1/00—Contacts
- H01H1/12—Contacts characterised by the manner in which co-operating contacts engage
- H01H1/14—Contacts characterised by the manner in which co-operating contacts engage by abutting
- H01H1/20—Bridging contacts
- H01H1/2008—Facilitate mounting or replacing contact bridge and pressure spring on carrier
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/02—Details
- H01H13/26—Snap-action arrangements depending upon deformation of elastic members
- H01H13/36—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs
- H01H13/365—Snap-action arrangements depending upon deformation of elastic members using flexing of blade springs having a symmetrical configuration
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
- H01H13/50—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member
- H01H13/62—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a single operating member the contact returning to its original state upon manual release of a latch
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
- H01H5/04—Energy stored by deformation of elastic members
- H01H5/18—Energy stored by deformation of elastic members by flexing of blade springs
- H01H5/28—Energy stored by deformation of elastic members by flexing of blade springs two separate blade springs forming a toggle
Definitions
- the present invention relates generally to electrical switches, and, more particularly, to limit switches, proximity switches and the like in which a cam, linear operator or other position adjustable device operates the switch to open or close the switch.
- the present invention pertains to switches known as snap switches.
- Electrical switches are used in many different types of devices to start a function, stop a function, adjust the rate or other performance of the function, etc.
- trains, subways and other devices may have several switches positioned in various locations to sense or confirm operation of doors that open or close access openings.
- Some such switches are used in high voltage applications while others are used in low voltage applications.
- Arcing between switch contacts can occur due to frequent and rapid opening and closing of the contacts, as well as due to other conditions under which the switch may have to operate. When arcing occurs, it can happen that the switch contacts become welded to each other. Breaking the welds to separate the welded contacts can be difficult, and until the condition is corrected or the switch is replaced, normal function of the devices in which the switch is installed is adversely affected. It is desirable to provide a switch with redundancy to continue operating in such damaged situations; and/or, to operate forcefully when opening the contacts to thereby break welds that may occur from arcing.
- a universal load switch is provided with convex fixed terminal contacts and convex movable contacts selectively connectable electrically to the terminal contacts. Snap blades forcibly move the movable contacts toward and away from each of the terminal contacts.
- a load switch is provided with opposed spaced terminals, terminal contacts on the opposed spaced terminals, and a contact blade assembly between the terminal contacts, the contact blade assembly including blade contacts. Snap blades forcibly moving the contact blade assembly toward and away from both of the terminals.
- a load switch is provided with first and second spaced upper terminal contacts, first and second spaced lower terminal contacts, and a contact blade assembly have a first end disposed between the first upper contact and the first lower contact, and a second end disposed between the second upper contact and the second lower contact. Contacts of the contact blade assembly selectively engage the terminal contacts.
- a blade shuttle moves the contact blade assembly, and snap blades forcibly move the contact blade assembly toward and away from each of the first and second spaced upper and lower terminal contacts.
- a load switch is provided with first upper and lower terminals having first upper and lower terminal contacts thereon, second upper and lower terminals having second upper and lower terminal contacts thereon, a plunger assembly and a blade shuttle assembly including a blade shuttle and a contact blade assembly disposed in the blade shuttle.
- the contact blade assembly has first and second ends between the first upper and lower terminals and the second upper and lower terminals, respectively.
- Upper and lower blade contacts are provided on opposite sides of the contact blade assembly at each of the first and second ends. Snap blades operatively arranged between the plunger assembly and the blade shuttle forcibly move the contact blade assembly toward and away from each of the upper and lower terminals.
- FIG. 1 is a perspective view of a universal load switch
- FIG. 2 is an elevational view of the universal load switch shown in Fig, 1, but having an outer housing cover removed to expose internal components of the universal load switch;
- FIG. 3 is a perspective view of a universal load switch similar to that shown in Figs. 1 and 2, but having alternate connection accessories;
- FIG. 4 is an enlarged perspective view of a subassembly in the universal load switch shown in the previous drawings;
- FIG. 5 is a cross-sectional view of the subassembly shown in Fig. 4 for the universal load switch;
- Fig. 6 is an exploded view of a plunger assembly for the universal load switch
- Fig. 7 is a cross-sectional view of the plunger assembly
- FIG. 8 is a perspective view of a blade shuttle assembly in the universal load switch
- FIG. 9 is an exploded view of a blade assembly in a universal load switch
- FIG. 10 is a perspective view illustrating an assembly step for installing the blade assembly in the blade shuttle
- FIG. 11 is a perspective view illustrating a later assembly step for installing the blade assembly in the blade shuttle;
- Fig. 12 is an exploded view of the blade shuttle assembly;
- Fig. 13 is an enlarged view of a set of terminals for the universal load switch
- Fig. 14 is a perspective view of the butterfly assembly fully assembled and ready for installation in the housing and terminal assembly;
- Fig. 15 is a perspective view of the butterfly assembly fully installed in the universal load switch housing
- FIG. 16 is an enlarged, fragmentary cross-sectional view of a distal end of the plunger in the universal load switch;
- Fig. 17 is an exploded view of the universal load switch
- Fig. 18 is an exploded view of the universal load switch shown from a different angle than that shown in Fig. 17;
- FIG. 19 is a perspective view of the universal load switch
- FIG. 20 is a fragmentary view of a fully assembled a universal load switch without the housing cover being shown;
- Fig. 21 is an elevational view showing the universal load switch in a so- called "free position"
- Fig. 22 is an elevational view illustrating the universal load switch at an operating condition with the plunger depressed
- Fig. 23 is an elevational view illustrating the universal load switch in a so- called "reset" condition
- Fig. 24 is a cross-sectional view of the universal load switch at the reset condition shown in Fig. 23;
- FIG. 25 is a perspective view of a second embodiment for the blade shuttle assembly in a universal load switch.
- Fig. 26 is a perspective view of the blade shuttle assembly shown in Fig. 25 installed in a completed switch.
- universal load switch 100 includes a housing 102 to seal and protect the inner components of the switch mechanism to be described subsequently herein.
- Switch 100 can be connected within an electrical circuit in many different ways.
- wire leads 103 a, b, c and d can be connected to the switch by soldering, crimp connecting or other suitable electrical connection, as those skilled in the art will readily understand.
- An alternative construction is shown in Fig. 3 in which quick connect blade accessories 203a-d are provided in place of wire leads 103a-d.
- Quick connect blade accessories 203 a-d can be connected by welding, crimp connections, screws 205 (only one screw 205 being shown for exemplary purposes) or other suitable electrical connecting means to the switch.
- load switch 100 Operating components of load switch 100 are contained within housing 102, except for the distal end of a plunger assembly 104 that protrudes from housing 102. As will be described subsequently herein, the distal end of plunger assembly 104 can be depressed for operating load switch 100.
- FIG. 2 illustrates universal load switch 100 with a cover or a side panel removed from housing 102 to expose the operating mechanisms of the switch within the switch housing.
- Switch 100 includes a butterfly assembly 105, which is comprised of plunger assembly 104, a blade shuttle assembly 106 and snap blades 108, 110 interconnecting plunger assembly 104 and blade shuttle assembly 106.
- Butterfly assembly 105 can be preassembled out of housing 102, and thereafter installed as a single unit or subassembly in switch 100, as will be described more fully hereinafter.
- FIG. 4 shows butterfly assembly 105 apart from the remaining structures of switch 100
- Fig. 5 is a cross-sectional view of butterfly assembly 105, more clearly showing plunger assembly 104 and blade shuttle assembly 106 interconnected by snap blades 108, 110.
- Figs 6-12 illustrate the component parts of butterfly assembly 105, including plunger assembly 104 and blade shuttle assembly 106.
- plunger assembly 104 includes a plunger 112, a C-spring 114, a guide 116 and a rollover washer 118.
- Plunger 112 is a cylindrical rod or shaft having a circumferential depression 120 at the external end thereof extending out of housing 102, and a circumferential channel 122 at the opposite or inner end thereof.
- C- spring 114 is, as the name implies, a C-shaped spring body having a hole 124 centrally located in a trunk portion 126 of the C-shaped body.
- First and second arms 128, 130 project from trunk portion 126 and include notched distal ends 129, 131, respectively.
- Guide 116 includes a hole 132 in a trunk 134 and arms 136, 138 projecting from opposite ends of trunk 134.
- Fore and aft flange plates 140, 142 project from the edges of trunk 134 and arms 136, 138. Accordingly, guide 116 generally defines a C-shaped channel 144 for receiving and supporting C-spring 114 in the
- Fig. 7 is a cross-sectional view of the assembled plunger assembly 104.
- Plunger 112 is extended into holes 124 and 132 of C-spring 114 and guide 116, respectively.
- the peripheral edges defining holes 124, 132 are received in circumferential channel 122 of plunger 112, and rollover washer 118 is provided there against to hold the assembled spring 114 and guide 116 on plunger 112.
- arms 136, 138 define therein openings 146, 148 respectively.
- FIG. 8 is a perspective view of blade shuttle assembly 106, which includes a contact blade assembly 150 held in a blade shuttle 152.
- a blade stay 154 and coil spring 156 are disposed to hold blade assembly 150 in blade shuttle 152.
- FIG. 9 is an exploded view of blade assembly 150, which includes a contact blade 158 having upper contacts 160 and lower contacts 162 provided thereon.
- a contact blade 158 having upper contacts 160 and lower contacts 162 provided thereon.
- Four upper contacts 160 and four lower contacts 162 are provided in overlying alignment, extending through holes 164 defined in contact blade 158.
- Upper contacts 160 and lower contacts 162 are provided in pairs on opposite faces of contact blade 158, near opposite ends of contact blade 158.
- Silver contacts 160, 162 that preferably are convex or hemispherical in outer surface shape can be welded or staked to one another.
- each contact When formed by staking, each contact has a primary head and a shank which extends through one of the holes 164 in contact blade 158, and during the staking process the distal end of the shank is pressed to form the opposite contact surface.
- a central aperture 166 is provided in contact blade 158.
- FIG. 10 is a perspective view illustrating an assembly step for installing contact blade assembly 150 in blade shuttle 152.
- Blade shuttle 152 defines a window 168 extending therethrough and having upper and lower pedestals 170, 172 projecting toward each other, but spaced from each other in window 168.
- Contact blade assembly 150 is tilted on an edge and inserted into window 168.
- Upper and lower pedestals 170, 172 can be bifurcated as shown for upper pedestal 170 or can be channeled as shown for lower pedestal 172 to accommodate the width of contact blade 158 being inserted therethrough.
- a cylindrical opening 173 and other slots or openings can be provided through blade shuttle 152 to accommodate passing of contacts 160, 162 therethrough.
- contact blade 158 is generally of a dog bone shape, having a narrower waist section at the middle thereof and wider sections containing upper and lower contacts 160, 162 at opposite ends of contact blade 158. Accordingly, with contact blade 158 centrally located in window 168, the contact blade can be rotated for placement over lower pedestal 172 such that lower pedestal 172 extends through central aperture 166.
- FIG. 11 is a perspective view illustrating a later assembly step for installing blade assembly 150 in blade shuttle 152.
- Aperture 166 is engaged with lower pedestal 172, with contact blade 158 extending outwardly of window 168 so that upper and lower contacts 160, 162 are exposed outwardly of blade shuttle 152 at both ends of contact blade 158.
- blade stay 154 is positioned over lower pedestal 172 and against contact blade 158, and coil spring 156 is compressed and inserted into window 168.
- FIG. 12 is an exploded view of blade shuttle assembly 106, better showing blade stay 154 and spring 156.
- blade stay 154 is engaged over lower pedestal 172 and against contact blade 158.
- Spring 156 is engaged over a truncated conical end of blade stay 154 at the lower end of spring 156 and over upper pedestal 170 and against the upper end of window 168 at the upper end of spring 156. Accordingly, blade assembly 150 is held yieldingly in blade shuttle 152 by the biasing force of spring 156 there against, and can tilt or twist against the force of spring 156.
- blade shuttle 152 defines V-channels 174, 176 extending inwardly from opposite surfaces.
- snap blades 108, 110 are angularly disposed between and held in V-channels 174, 176 and shaped distal ends of arms 129, 131 of C-spring 114. Accordingly, snap blades 108, 110 extend through openings 146, 148 defined in guide 116 and interconnect plunger assembly 104 with blade shuttle assembly 106.
- housing 102 also contains fixed, upper, normally open terminals 178, 180 having silver terminal contacts 182, 184, respectively, provided above the pairs of upper contacts 160 at opposite ends of contact blade 158, and fixed, lower, normally closed terminals 186, 188 having silver terminal contacts 190, 192 provided below the pairs of lower contacts 162 at opposite ends of contact blade 158.
- Terminal contacts 182, 184, 190, 192 preferably also are convex or hemispherical in outer surface shape.
- Fig. 13 is an enlarged view of one set of terminals, including upper terminal
- Terminals 178, 180, 186, 188 can be adapted easily for attachment to various different types of electrical conductors including the aforementioned soldered connections, screw connections, snap or sliding connections and the like, including the aforedescribed wire leads 103a-d or quick connect of blade accessories 203 a-d.
- Fig. 14 is a perspective view of butterfly assembly 105 fully assembled and ready for installation in housing 102, which has terminals 178, 180, 186, 188 installed therein.
- FIG. 15 is a perspective view of the butterfly assembly 105 fully seated within housing 102.
- the upper and lower contacts 182, 184, 190, 192 of the preinstalled terminals 178, 180, 186, 188 are positioned above and below the contacts 160, 162 on contact blade 158 of butterfly assembly 105.
- Fig. 16 illustrates components for final assembly at the distal end of plunger
- An O-ring 194 is seated in a groove 196 in housing 102 that is provided around plunger 112.
- a washer 198 and a return spring 200 are placed over the distal end of plunger 112.
- a spring cap 202 and lock ring 204 are next installed over the distal end of plunger 112, with lock ring 204 seated in circumferential depression 120, thereby holding return spring 200 in operating position between housing 102 and spring camp 202.
- Figs. 17 and 18 illustrate a step in the completion of housing 102 from different angles.
- a cover piece 206 having weld grooves 208 is positioned over the open switch assembly.
- Fig. 19 illustrates the switch after the cover has been sonically welded in place.
- seal compound 210 is injected through a seal port 212 in housing 102. Terminal screws 214 are shown attached to the terminals.
- Fig. 20 shows further detail of the flow of seal compound 210 within the switch 100.
- blade wedge 108 is disposed between an upper blade wedge 216 and a lower blade wedge 218, and snap blade 110 is disposed between an upper blade wedge 220 and a lower blade wedge 222.
- Blade wedges 216, 218, 220, 222 operate together with the movement of butterfly assembly 105 to impart forced movement of contact blade 158 in both directions via snap blades 108, 110.
- Blade wedges 216, 218, 220, 222 can be integral formations created during molding of load switch housing 102. Accordingly, blade wedges 216, 218, 220, 222 are rigid and strong.
- Fig. 21 illustrates switch 100 in a so-called "free position.”
- the normally closed lower terminals 186, 188 are in contact with lower contacts 162 of contact blade assembly 150.
- Two of the lower contacts 162 at one end of contact blade 158 are in electrical contact with lower terminal contact 190 of lower terminal 186 and two lower contacts 162 at the opposite end of contact blade 158 are in electrical contact with lower terminal contact 192 of lower terminal 188.
- FIG. 22 illustrates switch 100 at an operating condition with plunger 112 having been depressed.
- Snap blades 108, 110 which extend angularly outwardly and upwardly from grooves 174, 176 toward the shaped, notched distal ends 129, 131 of spring 114 in the free position have been flattened in the operating condition when plunger 112 has been depressed, which in turn moves all of plunger assembly 104 downwardly.
- the flat blades 108, 110 are ready to snap the mechanism to a second position by elevating blade shuttle assembly 106. If the contacts have become welded due to load and arcing, snap blades 108, 110 wedge and force transfer, to break the welds.
- the C-spring provides transfer snap by loading the snap blades inwardly.
- FIG. 23 illustrates switch 100 in a so-called "reset" position in which upper contacts 160 are in electrical contact with upper terminal contacts 182, 184 of upper terminals 178, 180.
- Plunger 112 has been released, and is returned to its elevated position by return spring 200, thereby raising all of shuttle assembly 104.
- Two upper contacts 160 at one end of contact blade 158 are in electrical contact with upper terminal contact 182 of upper terminal 178 and two upper contacts 160 at the opposite end of contact blade 158 are in electrical contact with upper terminal contact 184 of upper terminal 180.
- Blade shuttle 152 has been elevated so as to elevate contact blade 158 toward upper terminals 178, 180 to place the pairs of upper contacts 160 against the upper terminal contacts 182, 184
- Fig. 24 is a cross-sectional view of the switch at the reset position, as shown in Fig. 23.
- Fig. 25 is a perspective view of a modification for the blade shuttle assembly.
- a contact blade assembly 250 thereof includes electrically isolated upper and lower contact blades 258, 259. Insulation material can be provided between upper and lower contact blades 258, 259. Upper contacts 260 are installed in upper contact blade 258 and lower contacts 262 are installed in lower contact blade 259. Even if one side of the switch assembly becomes welded in either the upper or lower contact configuration such that only the opposite side operates, cross continuity does not occur because of the electrical isolation of the upper and lower contacts.
- Fig. 26 illustrates installation of the double blade assembly in a switch 300.
- switch 300 The other components of switch 300 are similar to those described previously herein with respect to switch 100 and are identified with the same reference numbers.
- the various contacts described herein, including upper contacts 160, 260 lower contacts 162, 262 and upper and lower terminal contacts 182, 184, 190, 192 preferably are solid silver contacts, or other high-grade electrically conductive material.
- contacts 160, 162, 182, 184, 190, 192, 260, 262 are each of convex outer shape to provide some sliding contact one against the other when electrical contact is established. Since contact blade 158 is spring mounted, some flexibility is provided whereby contact blade 158 self-adjusts while placing either upper contacts 160 thereof or lower contacts 162 thereof against upper terminal contacts 182, 184 or lower terminal contacts 190, 192.
- the biasing configuration of the springs, snap blades and blade wedges provides a forced contact break in both directions.
- the switch therefore has high end adaptability for many uses, including handling high load levels, handling logic level loads, being totally sealed to the environment, configurable to use with multiple termination types while providing forced break in both transfer directions for added reliability.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112010002997T DE112010002997T5 (en) | 2009-08-31 | 2010-07-31 | UNIVERSAL LOAD SWITCH |
US13/392,681 US9099263B2 (en) | 2009-08-31 | 2010-07-31 | Universal load switch |
CN201080038346.0A CN102484009B (en) | 2009-08-31 | 2010-07-31 | universal load switch |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US23836009P | 2009-08-31 | 2009-08-31 | |
US61/238,360 | 2009-08-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011025625A1 true WO2011025625A1 (en) | 2011-03-03 |
Family
ID=42985295
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2010/044044 WO2011025625A1 (en) | 2009-08-31 | 2010-07-31 | Universal load switch |
Country Status (4)
Country | Link |
---|---|
US (1) | US9099263B2 (en) |
CN (1) | CN102484009B (en) |
DE (1) | DE112010002997T5 (en) |
WO (1) | WO2011025625A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011103601U1 (en) * | 2011-07-22 | 2012-10-29 | Noell Mobile Systems Gmbh | Stop switching device |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6501630B2 (en) * | 2015-06-04 | 2019-04-17 | 佐鳥電機株式会社 | switch |
EP3101671B1 (en) * | 2015-06-04 | 2019-02-20 | Satori Electric Co., Ltd. | Switch |
CN105305107A (en) * | 2015-11-09 | 2016-02-03 | 上海友邦工业控制系统有限公司 | Quick plug button |
JP6838484B2 (en) * | 2017-04-28 | 2021-03-03 | オムロン株式会社 | switch |
TWM565390U (en) * | 2017-12-15 | 2018-08-11 | 進聯工業股份有限公司 | Improved switch device structure |
US11610750B2 (en) * | 2018-08-10 | 2023-03-21 | Te Connectivity Solutions Gmbh | Electromechanical switch with stabilized engagement between contacts |
CN115621055A (en) | 2021-07-15 | 2023-01-17 | 霍尼韦尔国际公司 | Switching element comprising an integrated movable carrier assembly |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1289680A (en) * | 1961-03-22 | 1962-04-06 | Schaltbau Gmbh | Snap-action switch |
US5283406A (en) * | 1992-11-23 | 1994-02-01 | Honeywell Inc | Switch with moveable carrier and moveable contacts attached thereto |
US20020033323A1 (en) * | 2000-09-07 | 2002-03-21 | Robert Ehrensberger | Sealed manual reset switch |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2598856A (en) * | 1951-02-24 | 1952-06-03 | Gen Motors Corp | Snap action switch |
US2840657A (en) * | 1955-03-23 | 1958-06-24 | Illinois Tool Works | Two circuit snap switch |
US3668347A (en) * | 1970-01-19 | 1972-06-06 | Robertshaw Controls Co | Snap acting electrical switch construction having reset means |
US3624332A (en) * | 1970-09-09 | 1971-11-30 | Oak Electro Netics Corp | Snap switch |
JPS52142667U (en) * | 1976-04-07 | 1977-10-28 | ||
US4634820A (en) * | 1983-11-24 | 1987-01-06 | Omron Tateisi Electronics Co. | Quick-break electrical switch with rectilinearly movable plunger actuator |
GB2208037B (en) * | 1987-07-01 | 1991-11-06 | Redcliffe Electronics Limited | Electrical switches |
CN2354225Y (en) * | 1998-12-28 | 1999-12-15 | 西安沙尔特宝电气有限公司 | Quick-action switch with forced cut-off function |
US6518528B2 (en) * | 2001-04-11 | 2003-02-11 | Rockwell Automation Technologies, Inc. | Limit switch with direct opening action |
US6642823B2 (en) * | 2001-09-21 | 2003-11-04 | Siemens Energy & Automation | Contact block assembly and a method of assembling a contact block assembly |
CN2870120Y (en) * | 2006-03-16 | 2007-02-14 | 朱纪根 | Enclosed stroke switch |
-
2010
- 2010-07-31 DE DE112010002997T patent/DE112010002997T5/en not_active Withdrawn
- 2010-07-31 US US13/392,681 patent/US9099263B2/en active Active
- 2010-07-31 WO PCT/US2010/044044 patent/WO2011025625A1/en active Application Filing
- 2010-07-31 CN CN201080038346.0A patent/CN102484009B/en active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1289680A (en) * | 1961-03-22 | 1962-04-06 | Schaltbau Gmbh | Snap-action switch |
US5283406A (en) * | 1992-11-23 | 1994-02-01 | Honeywell Inc | Switch with moveable carrier and moveable contacts attached thereto |
US20020033323A1 (en) * | 2000-09-07 | 2002-03-21 | Robert Ehrensberger | Sealed manual reset switch |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202011103601U1 (en) * | 2011-07-22 | 2012-10-29 | Noell Mobile Systems Gmbh | Stop switching device |
Also Published As
Publication number | Publication date |
---|---|
US20120152713A1 (en) | 2012-06-21 |
CN102484009A (en) | 2012-05-30 |
US9099263B2 (en) | 2015-08-04 |
DE112010002997T5 (en) | 2012-10-25 |
CN102484009B (en) | 2017-05-31 |
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